Scholarlink

<p>Soil salinization critically threatens agricultural sustainability by disrupting plant membrane integrity and lipid homeostasis. To elucidate lipid-mediated salt tolerance mechanisms in the ecologically important turfgrass <i>Carex rigescens</i>, comparative lipidomic profiling was conducted on salt-tolerant (‘Lvping No.2’) and salt-sensitive (‘Lvping No.1’) genotypes subjected to 300 mM NaCl. Results revealed that the tolerant genotype uniquely maintained structural phospholipid levels (notably phosphatidylcholine and phosphatidylethanolamine) with elevated root PC: PE ratios, stabilized plastidic membrane lipids (monogalactosyldiacylglycerol, digalactosyldiacylglycerol, phosphatidylglycerol) which were essential for photosynthesis, and enhanced unsaturation indices across phospholipids and glycerolipids. These coordinated adaptations minimized membrane peroxidation while optimizing fluid dynamics under salinity stress. The study demonstrates that lipid remodeling—notably through root membrane stabilization and photosynthetic protection—serves as a key adaptive strategy for salinity tolerance, offering critical biomarkers for developing salt-tolerant grass germplasm.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Lipid Remodeling Underlies Salt Tolerance in Carex rigescens: A Comparative Lipidomic Analysis

  • 期刊论文

  • 发表日期：

    2026年1月19日

查看全文
  • Jie Zhang,
  • Yiming Wu,
  • Chengze Ma,
  • Yi Shi,
  • Mingna Li,
  • Qiannan Hu

摘要

Soil salinization critically threatens agricultural sustainability by disrupting plant membrane integrity and lipid homeostasis. To elucidate lipid-mediated salt tolerance mechanisms in the ecologically important turfgrass Carex rigescens, comparative lipidomic profiling was conducted on salt-tolerant (‘Lvping No.2’) and salt-sensitive (‘Lvping No.1’) genotypes subjected to 300 mM NaCl. Results revealed that the tolerant genotype uniquely maintained structural phospholipid levels (notably phosphatidylcholine and phosphatidylethanolamine) with elevated root PC: PE ratios, stabilized plastidic membrane lipids (monogalactosyldiacylglycerol, digalactosyldiacylglycerol, phosphatidylglycerol) which were essential for photosynthesis, and enhanced unsaturation indices across phospholipids and glycerolipids. These coordinated adaptations minimized membrane peroxidation while optimizing fluid dynamics under salinity stress. The study demonstrates that lipid remodeling—notably through root membrane stabilization and photosynthetic protection—serves as a key adaptive strategy for salinity tolerance, offering critical biomarkers for developing salt-tolerant grass germplasm.